Improvement in heel-crimping machines



. 3Sheets--Sheet2 E. B. PARKHURST.

Heel Crimping-Machines.

H .147, 6 Patented Feb.24.11874.

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WITNESSES. INVENTOR.

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Heel Crimping-Machines.

N0.l47,967 Patented Feb.24,1874.

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INVENTOR.

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UNITE STATES A'IENT OEEIoE.

EDWARD PAEKHUEST, o woEUEN, ASSIGNOR To LEWIS B. EUssELL,

or LYNN, MASsAoHUsETTS.

' IMPROVEMENT IN HEEL=CRIMPING MACHINES.

Specification forming part of Letters Patent No. 147,967, dated February24, 1 74; application filed January 10, 1874.

To all whom it may concern:

Be itknown that I, EDWARD B. PARKHURsT, of Woburn, in the county ofMiddlesex and State of Massachusetts, have invented a new and valuableImprovement in Heel-Crimping M achines; and I do hereby declare that thefollowing is afull, clear, and exact description of the construction andoperation of the same, reference being hadto the annexed drawings,making a part of this specification, and to the letters andfigures ofreferencemarked thereon.

' Figure 1- of the drawings is a representation of a longitudinalvertical section of my heel-crimping machine. Fig. 2 is a top view ofthe same. Fig. 3 is a horizontal section, and Fig. 4 a perspective view,of the same. Figs. 5, 6, and 7 are detail views.

This invention relates to certain novel improvements on machinery whichis designed for crimping the stifienings of boot and shoe heels. Myimprovements have relation especially to means for holding andadjustinglthe last on which the leather is crimped; also, to twogravitating dischargers, which are applied toavertically-reciprocatinghead, and arranged on opposite sides of thelast, for the purpose of freeing the crimped stiifenings from the lastafter the crimping devices have receded outof the way. My invention alsohas relation to devices for holding the blanks, deliverin g them infront of the crimping devices, centering them with respect to thesedevices, and, finally, releasing them as they are taken by the crimpers;also, to a novel construction of devices for pressing and crimping theleather blanks on the last, and to certain novel mechanism for actuatingthe crimpers, and for giving two strokes to the bottom crimping-jawstoone stroke given to the side and back jaws, all as will be hereinafterexplained.

In the annexed drawings, A represents the frame of the machine, and Athe horizontal top thereof, on which the feeding, crimping, anddischarging devices are arranged. A designates ahorizontaldriving-shaft, on which is applied a driving-belt pulley, a, a slidingfriction-clutch, a and a pinion spur-wheel, a The clutchis actuated bymeans of a loaded treadle, a on which the operator places his foot whenhe wishes to give motion to the which plays in the cam-groove c in saiddrum 0 designates a transverse yoke, to the ends of which two rods, 0 Care pivoted. This yoke is connected to the carrier C by means of ascrew, d, on which an elastic washer, d, is applied. By turning thescrew (Z, the yoke 0 is adjusted forward or backward, and held whereverdesired. The rods 0 G extend forward and outward, and are pivoted to thebacks of two horizonta-lly-vibratin g jaws, c c, which are pivoted tocars formed on a tube, 6, that slides on a centering-pin, E. The jaws cc are intended for crimping the blan {S on the two opposite sides of alast, L, and the end of the sliding tube 6 between the jaws e c isintended for crimping the blanks about the heel of the last, for whichpurpose the pressing-s11 rfaces of the jaws and the tube are shaped soas to conform to the corresponding surfaces of, the last.

The sliding tube 0 and the jaws c c are moved up to and from the last atproper times by the reciprocating movements given to the carrier 0 andduring the pressing action of said parts 0 c 0 they are allowed to yieldslightly by means of the washers d and another washer, f on thecentering-pin E. The cente'ring'pin E is guided by a bridgebearing, Efixed to the frame-top A and the rear end of this pin is adjustablysecured to a slide, E working between the guides 12 b, and receiving longitudiual movements from the cam-faces f f on the ends of the drums Cand D.

b b by means of a wheel, 9 playing in a twothrow cam-groove, g", madeinto the periphery of the drum D. This groove 9 is so shaped that itgives two strokes forward and back to the crimpers g g, while thecrimpers e e a remain at rest, clampingv the leather, thereby roundingand finishing the stiffeners in a much better manner than would be doneif only one stroke were given to the crimpers g g. Thelaterally-vibrating movements are given to the crimpers g g by means ofanti-friction rollers i i, applied on the rear ends of the griper-arm's,which rollers playback and forth in two oblique slots, h h, made throughthe top of frame A. The last or former L is adjustably secured to anoverhanging bracket, L, fixed on the frametop A in front of and in linewith the crimpers. Two screws, 1 Z, secure the last to its bracket, andtwo other screws, l l, aiford abutments for the last when properlyadjusted by means of the screws ll. The last is firmly held againstlateral displacement by means of two cylindrical blocks, 2 2, which arerecessed into the upper side of the last, and also into the lower sideof the overhanging portion of the bracket L, at the ends of which blocksindiarubber or other elastic substance may be applied. An end abutmentfor the last L is formed by recessing the end into the bracket L, asshown in Fig. 2. J represents avertically-moving head, which is guidedby means of rods J J, that pass through the frame-top A ,a11d alsothrough fixed pendants J secured to the under side of this top. Verticalmovements are given to the head J by means of arms j, which are fixed ona rockshaft, j, and loosely attached to blocks, which are adjustablyapplied on the rods J. On one end of the rockshaft j a toothed segment,k, is keyed, which is engaged by teeth on one end of a vibrating lever,70, the other end of which lever is held in contact with the cam-edge fof the drum D by the weight of the head J and its attachments. Thecamedgef is so shaped that it will holdup the head J during the crimpingoperation, and allow the crimpers to pass freely beneath this head. 011each side of the middle of thelengthof the head J, and to the front sidethereof, two horizontal rods, 12 a, are

" rigidly secured at their outer ends, which rods coincide with eachother, and, if desired, they may be adjustable. On these rods areapplied the devices for receiving the leather blanks, and holding themin proper position for being taken by the crimpers; also, the devicesfor releasing the blank-holders when the crimpers take hold of them, andalso the devices for discharging the crimped stiffeners. These severaldevices I will now describe, commencing with the holders. N N are twoangular levers, which are applied on the rods n n, so as to vibratefreely, the lower ends of which levers are hooked at 3, and held incontact with the front side of the head J by the weight of the upperprojecting arms. The hooks 3 afiord rests for the lower straight edgesof the blanks, and these hooks are in a plane parallel to the top of theframe A. When the head J descends to deliver a blank, the blank isreleased from the resting-hooks 3 by the upper arms of the levers Nstriking tripping-pins 4 4, fixed into the sides of the bracket L. P Pdesignate holders for the extremities of the blanks, which holders havevertical lips 5 formed on them, and they are formed on tubes 6, whichreceive, loosely through them, the

rods n n. These end-holders P are held flatly in contact with the front'face of the head J, and the tubes on which they are formed have annulargrooves in their peripheries, which leave annular flanges 1" on theirouter ends. These flanges 1" are received in notches made into theshortest arms of angular levers s s, which are fixed on rocking pivots tif, having their bearings in posts rising from and flxed rigidly to thehead J near its extremities. The longer arms of the levers s are helddown in proper position by springs 7 7, and when the head descends posts8 S are struck by said longer arms and the holders P P are both movedoutwardly and caused to release the ends of the blanks confined betweenthem. When the head J rises the holders P P are again moved outwardly toreceive a blank by the following contrivance: On the rear ends of therocking pivots t t, arms at m are keyed, the free ends of which areengaged by toothed segments, as indicated by dots in Fig. 4.

When the head J rises, the free ends of arms on m are depressed by meansof a goose-neck, R, which is fixed to the bridgebearing E. This gives anoutward lateral movement to the holders PP, and, as before stated,prepares them to receive the blanks. VV designate two dischargers, whichare pivoted on pins '0 'u, projecting horizontally from the heads of twovertical guides, w 20, applied on the inner ends of the rods n 02. Thesedischargers V V hang freely from their supportin gfrom the last duringthe descending movements of the head J.

Having described particularly the construc tion of the several partscomposing my i1nproved crimping-machine, I will now briefly describe thegeneral operation of the ma chine.

The blanks from which the stiffeners are produced have a lower straightedge and an upper arched edge, as shown by Fig. 7. These blanks areadjusted one at a time into the blank-holders on the reciprocatingheadJ, when this head is fully raised and said holders are in positionsto receive such blank. The head J then descends, and the pin E is movedup so as to firmly hold the blank centrally against the heel end of thelast L. The head J then rises, and the concave end of the tubu= larcrimper e is forced up against the last, after which the side crimpers ee are brought into action and press thesides of the leather stiffener,as shown in Fig. 3. While the stiifener is thus held, the crimping-j awsgg operate twice upon the loweredge of the stiii'ener and crimp thisedge against the bottom of the last. The crimping devices then recedeand the head J is caused to descend, during which movement thedischargers V V free the finished stiffener from the last.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. The last or former L, secured to theoverhanging portion of a bracket, L, by means of adjusting-screws Z Z,abutting screws Z Z, and guide-blocks 2 2, substantially as described.

2. The gravitating disehargers V V, combined with the last L and avertically-reciproeating head, J, substantially as described.

3. The reciprocating crimper e, in combination with the pivoted sidecrimpers e e, and the crimping-shears g g, and last L, substantially asdescribed.

4. The reciprocating centering and holding pin E, in combination withthe last L and a vertieally-reciprocating head, J, carrying theblank-holders, substantially as described.

5. The yoke O ,adjustab1y applied to the sliding carrier 0 incombination with the rods 0 and the side crimpers c e, substantially asdescribed.

6. The pivoted angular levers N, constructed with blank supports 3, andcombined with the head J and tripping-pins 4, substantially asdescribed.

7. The lipped blank-holders P on sliding tubes 6, in combination withflanges r, forked levers 5, springs 7, fixed pins 8, arms m, andgoose-neck It, as and for the purpose described.

8. The drum D, provided with the zigzag groove g constructed to give twoforward strokes to the shear-crimpers g g at each turn of shaft B, incombination with drum 0, provided with the groove 0, constructed to giveone stroke to the crimpers e e c, at each turn of said shaft B,substantially as described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

EDWARD B. PARKHURS'I.

JOHN WINN.

